C++ Lines::set_color方法代码示例

int main ()
{
  using namespace Graph_lib;  // our graphics facilities are in Graph_lib namespace

  constexpr Point pt{100,100};    // to become top left corner of window

  Simple_window win {pt, 600, 400,"ch13.5_LineStile"};  // make a simple window, {top_left, width, hight, title}

  const int x_size = win.x_max();
  const int y_size = win.y_max();
  const int x_grid = 80;
  const int y_grid = 40;

  Lines grid;
  for (int x=x_grid; x<x_size; x+=x_grid)
    grid.add(Point{x,0},Point{x,y_size}); // vertical line
  for (int y=y_grid; y<y_size; y+=y_grid)
    grid.add(Point{0,y},Point{x_size,y});  // horizontal line

  grid.set_color(Color::red); // set color (chould affect both lines
  //grid.set_style(Line_style{Line_style::dot,2});
  //grid.set_style(Line_style::dashdot);
  grid.set_style(Line_style{Line_style::dashdot,2});

  win.attach(grid);

  win.wait_for_button();  // display!

}

void test_grid(Simple_window &win) {
    static const int x_size {win.x_max()}, y_size {win.y_max()};
    constexpr int x_grid {80}, y_grid {40};
    Lines grid;
    for (int x {x_grid}; x < x_size; x += x_grid)
        grid.add(Point{x, 0}, Point{x, y_size});
    for (int y {y_grid}; y < y_size; y += y_grid)
        grid.add(Point{0, y}, Point{x_size, y});
    grid.set_color(Color::yellow);
    grid.set_style(Line_style{Line_style::dash, 2});

    win.attach(grid);
    win.wait_for_button();
}

int main()
{
    Simple_window win {Point{100, 100}, 800, 1000, "Chapter 13 Drill"};

    Lines ls;
    for (int x = 100; x <= 800; x += 100)
        ls.add(Point{x, 0}, Point{x, 800});
    for (int y = 100; y <= 800; y += 100)
        ls.add(Point{0, y}, Point{800, y});

    string pic = "Instruments 1.jpg";
    string another_pic = "Instruments 2.jpg";

    Image im1 {Point{0, 0}, pic};
    im1.set_mask(Point{0, 0}, 200, 200);
    win.attach(im1);

    Image im2 {Point{200, 300}, pic};
    im2.set_mask(Point{0, 0}, 200, 200);
    win.attach(im2);

    Image im3 {Point{400, 600}, pic};
    im3.set_mask(Point{0, 0}, 200, 200);
    win.attach(im3);

    Vector_ref<Rectangle> rectangles;
    for (int i = 0; i < 8; ++i) {
        rectangles.push_back(new Rectangle{Point{100 * i, 100 * i}, 100, 100});
        rectangles[i].set_fill_color(Color::red);
        win.attach(rectangles[i]);
    }

    ls.set_color(Color::white);
    win.attach(ls);

    int row = 0;
    int col = 0;

    for (int i = 0; i < 100; ++i) {
        col = i % 8;
        if (i / 8 > row) ++row;
        Image im4 {Point{100 * row, 100 * col}, another_pic};
        im4.set_mask(Point{0, 0}, 100, 100);

        win.attach(im4);
        win.wait_for_button();
    }
}

int main(){
	double a, b, m, n;	// スーパー楕円のパラメータ
	int N;				// 選択する点の数

	cin >> a >> b >> m >> n >> N;

	Simple_window win(Point(100, 100), 640, 480, "q12_12");

	const int sx = win.x_max() / 2;	// 原点
	const int sy = win.y_max() / 2;
	const int scale = 100;			// スケール
	int x, y;						// 座標
	double angle = 0;				// 角度（θ）

	Mark m0(Point(sx, sy), 'X');	// 中心点
	Lines lines;
	vector<Point> vp;

	m = 1 / (m / 2);				// 2乗になるようにし、逆数をとる
	n = 1 / (n / 2);

	for(int i = 0; i < N; ++i){
		int rs = sin(angle) < 0 ? -1 : 1;	// sinの符号をとる
		int rc = cos(angle) < 0 ? -1 : 1;	// cosの符号をとる
		x = sx + a * scale * pow(abs(sin(angle)), m) * rs;	// 絶対値を累乗し、後で符号をかける
		y = sy - b * scale * pow(abs(cos(angle)), n) * rc;

		vp.push_back(Point(x, y));
		angle += 2 * M_PI / N;	// N角形の内角
	}

	for(int i = 0; i < vp.size(); ++i){
		for(int j = i + 1; j < vp.size(); ++j){
			lines.add(vp[i], vp[j]);
		}
	}

	lines.set_style(Line_style(Line_style::solid, 2));
	lines.set_color(Color::blue);
	win.attach(lines);

	win.attach(m0);
	win.wait_for_button();
}

void drill(Simple_window &win) {
    static const int x_size {win.x_max()}, y_size {win.y_max()};
    constexpr int num_x {8}, num_y {8};
    const int x_grid {x_size / num_x}, y_grid {y_size / num_y};
    Lines grid;
    for (int x {x_grid}; x < x_size; x += x_grid)
        grid.add(Point{x, 0}, Point{x, y_size});
    for (int y {y_grid}; y < y_size; y += y_grid)
        grid.add(Point{0, y}, Point{x_size, y});
    Vector_ref<Rectangle> vr;
    for (int i {0}; i < num_x; ++i) {
        vr.push_back(new Rectangle{Point{x_grid * i, y_grid * i},
                x_grid, y_grid});
        vr[vr.size() - 1].set_fill_color(Color::red);
        win.attach(vr[vr.size() - 1]);
    }
    grid.set_color(Color::yellow);
    grid.set_style(Line_style{Line_style::dash, 2});
    win.attach(grid);

    Image img1 {Point{x_grid * 2, 0}, "../snow_cpp.gif", Suffix::gif};
    img1.set_mask(Point{0, 0}, 200, 200);
    Image img2 {Point{0, y_grid * 4}, "../snow_cpp.gif", Suffix::gif};
    img2.set_mask(Point{0, 0}, 200, 200);
    Image img3 {Point{x_grid * 3, y_grid * 6}, "../snow_cpp.gif", Suffix::gif};
    img3.set_mask(Point{0, 0}, 200, 200);

    win.attach(img1);
    win.attach(img2);
    win.attach(img3);

    for (int i {0}; i < num_x; ++i) {
        for (int j {0}; j < num_y; ++j) {
            Image img4 {Point{x_grid * i, y_grid * j}, "img.jpg", Suffix::jpg};
            img4.set_mask(Point{0, 0}, 100, 100);
            win.attach(img4);
            win.wait_for_button();
        }
    }

    win.wait_for_button();
}